Investigation on the co-modification process of montmorillonite by anionic and cationic surfactants

Meng, Fanbin; Zhang, Zepeng; Wu, Limei; Zhuang, Guanzheng; Zhang, Shuo; Yuan, Jiangyan; Liao, Libing

doi:10.1016/j.clay.2016.08.025

Cited by 41 publications

(16 citation statements)

References 27 publications

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“…The samples HDTMA200, 400 and ODTMA100-400, after NO 3 − uptake, showed a slight basal space increase (Fig. 4), which could indicate the anion entrance into the interlayer space of montmorillonite by a synergic effect with cationic surfactants, as was found between HDTMA + and the anionic surfactant sodium dodecyl sulfonate [57].…”

Section: Xrd Resultsmentioning

confidence: 79%

Use of organo-montmorillonite for the nitrate retention in water: influence of alkyl length of loaded surfactants

et al. 2019

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The removal of NO 3 − from water was performed and compared among four organo-montmorillonites (OMt) with quaternary amine surfactants of different chain lengths [octadecyl trimethyl-(ODTMA), hexadecyl trimethyl-(HDTMA), tetradecyl trimethyl-(TDTMA) and dodecyl trimethyl-ammonium (DDTMA)] and loadings [100%, 200%, 400% of the Mt cation exchange capacity (CEC)]. The maximum adsorption of NO 3 − was attained by the long chain length surfactants (64 and 100 mg NO 3 − ions per gram of OMt, for HDTMA and ODTMA, respectively) with initial loading of 400% with respect to the CEC of Mt. The short chain length surfactants (DDTMA and TDTMA) did not show adsorption of NO 3 − except for TDTMA 400 sample. The NO 3 − adsorption produced a slight expansion of the interlayer thickness of the OMt samples loaded with long-chain surfactants that was assigned to the entrance of NO 3 − by a synergic effect with these surfactants. The decrease of the negative zeta potential, found for OMt samples relative to that of Mt sample, was attributed to the surfactant chain length rather than to the actual surfactant loaded amounts, which allowed attaining positive zeta potential values for the OMt loaded with long-chain surfactants. The NO 3 − adsorption on OMt samples caused a slight decrease in the positive zeta potential values, reflecting the external surface coating by NO 3 −. For long-chain molecules, this behaviour also indicated the formation of greater interactions such as ion pairs between the positive polar group of the surfactant and NO 3 − ions.

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Section: Xrd Resultsmentioning

confidence: 79%

Use of organo-montmorillonite for the nitrate retention in water: influence of alkyl length of loaded surfactants

et al. 2019

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“…Many organic compounds can be used to prepare OMt, e.g., cationic surfactants (mostly quaternary ammonium salts and quaternary phosphonium salts) (Lee et al, 2005;Xi et al, 2007;Vazquez et al, 2008;Zhou et al, 2009;Zhu et al, 2009a;Bardziński, 2014), anionic surfactants (Yılmaz and Alemdar, 2005;Yang et al, 2007;Sarier et al, 2010;Zhang et al, 2010b), nonionic surfactants (Platikanov et al, 1977;Shen, 2001;Nourmoradi et al, 2012;Ouellet-Plamondon et al, 2014;Silva et al, 2014b;Guégan et al, 2015;Yin et al, 2015;Zhuang et al, 2015a) and even the mixture of these modifiers, such as cationic and anionic surfactants (Regev and Khan, 1996;Chen et al, 2008;Chen et al, 2011;Zhang et al, 2013;Wu et al, 2014;Fu et al, 2016), cationic and nonionic surfactants (Zhang et al, 2012b;Yin et al, 2015;Zhuang et al, 2015a) and anionic and nonionic surfactants (Yang et al, 2005;Zhang et al, 2012a;Zhuang et al, 2015b).…”

Section: Synthesis Of Omtmentioning

confidence: 99%

“…Anionic surfactants are difficult to intercalate into the interlayer space due to the negative charges. However, they can also enter the interlayer space by accompanying with cations (Zhang et al, 2010b;Fu et al, 2016).…”

Section: Synthesis Of Omtmentioning

confidence: 99%

Organoclays used as colloidal and rheological additives in oil-based drilling fluids: An overview

Zhuang

Zhang

Jaber

2019

Applied Clay Science

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The objective of this paper is to give an overview of the synthesis, properties of different organoclays, including organo-montmorillonite, organo-sepiolite and organo-palygorskite, and their use as rheological additives in oil-based drilling fluids. The researches performed until the present moment are described and summarized. A significant amount of work had been done in this area, including the rheological behavior at normal and high temperature, the structure changes of organoclays in oil-based system, thermal stability and the rheological mechanisms. The role of layered and fibrous organoclays in oil-based drilling fluids in the enhancement of the rheological properties and thermal stability is deeply reviewed.

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“…However, it could be rather difficult to significantly expand the interlayer space of the MMT via the anionic surfactant alone. Therefore, a novel kind of organo-montmorillonite (OMMT) by the synergistic effect between the anionic and cationic surfactants has been prepared in recent years [13]. Another method for the modification of the MMT involved the use of silane coupling agents.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bifunctional Montmorillonite on the Thermal and Tribological Properties of Polystyrene/Montmorillonite Nanocomposites

Yue

et al. 2019

Polymers

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In this work, the effect of doubly functionalized montmorillonite (MMT) on the structure, morphology, thermal, and tribological characteristics of the resulting polystyrene (PS) nanocomposites was investigated. The modification of the MMT was performed using a cationic surfactant and an anionic surfactant or a silane coupling agent to increase the compatibility with PS matrix. The polystyrene/organo-montmorillonite (PS/OMMT) nanocomposite particles were prepared by soap-free emulsion polymerization. The OMMT was studied using Fourier-transform infrared (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The structural and morphological changes of PS/OMMT nanocomposites were further characterized by dynamic light scattering (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The thermal stability of all the PS/OMMT nanocomposites was higher than that of the pure PS. The anti-wear properties of the polyalphaolefin (PAO) were significantly improved due to the introduction of the PS/OMMT nanocomposite particles. The nanocomposites prepared by a cationic surfactant and a silane coupling agent exhibited the best thermal stability and tribological performance. Our results provide the valuable insights needed to guide the design of lubrication and friction reducing materials.

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Investigation on the co-modification process of montmorillonite by anionic and cationic surfactants

Cited by 41 publications

References 27 publications

Use of organo-montmorillonite for the nitrate retention in water: influence of alkyl length of loaded surfactants

Use of organo-montmorillonite for the nitrate retention in water: influence of alkyl length of loaded surfactants

Organoclays used as colloidal and rheological additives in oil-based drilling fluids: An overview

Effect of Bifunctional Montmorillonite on the Thermal and Tribological Properties of Polystyrene/Montmorillonite Nanocomposites

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